Simplot Hermiston #2 (Lagoon)

OFF CHANNEL· Umatilla, Oregon· Built 2002· Earth· 32 ft tall
Low Hazard Other Private

Key Takeaway

Simplot Hermiston #2 (Lagoon) is classified as low hazard in Oregon. It was completed in 2002 and is 24 years old. Its primary use is other.

Physical Details

Dam Height 32 ft (taller than 63.9% in OR)
Dam Length0 ft
Dam TypeEarth
Max Storage0 acre-ft
Normal Storage353 acre-ft
Surface Area16 acres
Drainage Area0 sq mi
Max Discharge0 cfs
Year Completed2002 (24 years old)
NID IDOR03809

Safety Information

Low Hazard

No probable loss of human life and low economic/environmental losses expected.

Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?

Emergency Action Plan: No
Last Inspection: March 22, 2018
State Regulated: Yes
Regulatory Agency: OWRD

Ownership

JR SIMPLOT COMPANY

Private

Nearby Dams

Frequently Asked Questions

What is the hazard classification of Simplot Hermiston #2 (Lagoon)?

Simplot Hermiston #2 (Lagoon) is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.

Who owns and operates Simplot Hermiston #2 (Lagoon)?

Simplot Hermiston #2 (Lagoon) is owned by JR SIMPLOT COMPANY (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.

When was Simplot Hermiston #2 (Lagoon) built?

Simplot Hermiston #2 (Lagoon) was completed in 2002, making it 24 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.

What is the primary purpose of Simplot Hermiston #2 (Lagoon)?

Simplot Hermiston #2 (Lagoon) serves the following purposes: Other. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.

How tall is Simplot Hermiston #2 (Lagoon)?

Simplot Hermiston #2 (Lagoon) has a dam height of 32 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.

When was Simplot Hermiston #2 (Lagoon) last inspected?

Simplot Hermiston #2 (Lagoon) was last inspected on March 22, 2018. Inspection dates indicate when a formal review occurred, not the results of that inspection.

Data from the National Inventory of Dams (NID) maintained by the US Army Corps of Engineers. Dam conditions may have changed since the last update. This site is not affiliated with USACE. Do not use for emergency planning — contact your local dam safety program.